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Versatility and Customized Solutions

While conventional mixing is usually adequate for the blending of easy to handle solids, only more intensive forms of mixing can produce total uniformity in a mix of materials having disproportionate mass, particle size, liquidity, viscosity or density. Simpson is here to assist you in reviewing wetted solids mixing options.

Over the last 110 years, Simpson Technologies has developed advancements and customizations for the chemical and industries by closely working with research-based organizations and clients. Simpson equipment provides strong repeatability, process control, advanced energy efficiency and safety.
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Industries We Frequently Serve

Animal FeedsCatalystsColored PigmentsGraphite ProductsPharmaceuticals
Architectural StoneCeramics/PotteryExplosives/PyrotechnicsMetallurgical ProductsRefractories
BatteriesBatteriesCharcoalFertilizerMolecular SievesWelding Rod Coating

  Mixing vs Mulling


A concise definition of mulling would read “an intensive and controlled mixing process.” Mulling action is a combination of controlled pressure and agitation, to achieve a high degree of uniformity in the preparation of two or more dry/solid or wetted/solid materials rather than agitation alone.


A mixer for combining solid materials usually operates with a stirring or beating action effected by blades, paddles, arms, or flighting. The normal action of this type of mixer though adequate for simple blending tasks, is not suitable where tempering action, strict uniformity or the intimate blending of a relatively small amount of material into a large mass, is desirable.


The muller is used where materials of disproportionate mass, density, viscosity or particle size must be evenly dispersed to form a homogenous mass… without segregation/or where a small amount of one or more materials must coats each grain of a larger mass.

Simpson Mix-Muller Batch Mixer

In small to large-sized processing systems or difficult mixing applications, versatility is critical. The Mix-Muller has been carefully designed and proportioned to achieve maximum performance, versatility and energy efficiency in these types of applications.


  • Medium-speed, high intensity, muller-type mixer for batch operation.


  • Small to large-sized batch preparation systems, and the most difficult mixing applications.


  • Adaptive tooling
  • Energy efficiency
  • Larger batch and longer available cycle
  • Rugged design
Simpson Multi-Mull Continuous Mixer

In medium to large-sized continuous processing systems or mixing applications. The Multi-Mull has been carefully designed to achieve maximum performance, consistency, and energy efficiency in these types of applications.


  • Medium-speed, high-intensity, muller-type mixer for continuous operation.


  • Medium-very large size process preparation systems seeking consistently high volumes and maximum efficiency.


  • Continuous mixing with back blending
  • Maximum energy efficiency
  • Controlled retention for consistency

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